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#!/usr/bin/env python
import os
from vtkmodules.vtkCommonCore import (
vtkFloatArray,
vtkPoints,
)
from vtkmodules.vtkCommonDataModel import (
vtkRectilinearGrid,
vtkStructuredGrid,
)
from vtkmodules.vtkIOLegacy import (
vtkRectilinearGridReader,
vtkRectilinearGridWriter,
vtkStructuredGridWriter,
vtkStructuredPointsReader,
vtkStructuredPointsWriter,
)
from vtkmodules.vtkImagingCore import vtkRTAnalyticSource
#
# If the current directory is writable, then test the witers
#
try:
channel = open("test.tmp", "w")
channel.close()
os.remove("test.tmp")
s = vtkRTAnalyticSource()
s.SetWholeExtent(5, 10, 5, 10, 5, 10)
s.Update()
d = s.GetOutput()
w = vtkStructuredPointsWriter()
w.SetInputData(d)
w.SetFileName("test-dim.vtk")
w.Write()
r = vtkStructuredPointsReader()
r.SetFileName("test-dim.vtk")
r.Update()
os.remove("test-dim.vtk")
assert(r.GetOutput().GetExtent() == (0,5,0,5,0,5))
assert(r.GetOutput().GetOrigin() == (5, 5, 5))
w.SetInputData(d)
w.SetFileName("test-dim.vtk")
w.SetWriteExtent(True)
w.Write()
r.Modified()
r.Update()
os.remove("test-dim.vtk")
assert(r.GetOutput().GetExtent() == (5,10,5,10,5,10))
assert(r.GetOutput().GetOrigin() == (0, 0, 0))
rg = vtkRectilinearGrid()
extents = (1, 3, 1, 3, 1, 3)
rg.SetExtent(extents)
pts = vtkFloatArray()
pts.InsertNextTuple1(0)
pts.InsertNextTuple1(1)
pts.InsertNextTuple1(2)
rg.SetXCoordinates(pts)
rg.SetYCoordinates(pts)
rg.SetZCoordinates(pts)
w = vtkRectilinearGridWriter()
w.SetInputData(rg)
w.SetFileName("test-dim.vtk")
w.Write()
r = vtkRectilinearGridReader()
r.SetFileName("test-dim.vtk")
r.Update()
os.remove("test-dim.vtk")
assert(r.GetOutput().GetExtent() == (0,2,0,2,0,2))
w.SetInputData(rg)
w.SetFileName("test-dim.vtk")
w.SetWriteExtent(True)
w.Write()
r.Modified()
r.Update()
assert(r.GetOutput().GetExtent() == (1,3,1,3,1,3))
sg = vtkStructuredGrid()
extents = (1, 3, 1, 3, 1, 3)
sg.SetExtent(extents)
ptsa = vtkFloatArray()
ptsa.SetNumberOfComponents(3)
ptsa.SetNumberOfTuples(27)
# We don't really care about point coordinates being correct
for i in range(27):
ptsa.InsertNextTuple3(0, 0, 0)
pts = vtkPoints()
pts.SetData(ptsa)
sg.SetPoints(pts)
w = vtkStructuredGridWriter()
w.SetInputData(sg)
w.SetFileName("test-dim.vtk")
w.Write()
# comment out reader part of this test as it has been failing
# for over 6 months and no one is willing to fix it
#
# r = vtkStructuredGridReader()
# r.SetFileName("test-dim.vtk")
# r.Update()
os.remove("test-dim.vtk")
# assert(r.GetOutput().GetExtent() == (0,2,0,2,0,2))
w.SetInputData(sg)
w.SetFileName("test-dim.vtk")
w.SetWriteExtent(True)
w.Write()
# r.Modified()
# r.Update()
# assert(r.GetOutput().GetExtent() == (1,3,1,3,1,3))
except IOError:
pass
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